Transmission apparatus and method for controlling the transmission apparatus

Abstract

A transmission apparatus includes: a data signal processor to add first data of a control signal to a data signal received, and transmit the data signal; a first signal output module to output second data of the control signal; an update controller to control an update of a function included in the first signal output module; and a second signal output module, when receiving a notice of an instruction for updating the function from the update controller, to output the first data that is the second data held therein when the notice thereof is received, wherein the second signal output module, when receiving a notice of a completion for updating the function from the update controller, outputs the first data that is the second data received from the first signal output module updated by the update controller.

What is claimed is: 
     
       1. A transmission apparatus comprising:
 a data signal processor to add first data of a control signal to a data signal received, and transmit the data signal to other transmission apparatus; 
 a first signal output module to output second data of the control signal; 
 an update controller to control an update of a function included in the first signal output module; and 
 a second signal output module, when a notice of an instruction for updating the function included in the first signal output module from the update controller is received, to output the first data of the control signal that is the second data of the control signal held in the second signal output module when the notice of the update instruction is received, 
 wherein the second signal output module, when a notice of a completion for updating the function included in the first signal output module from the update controller is received, outputs the first data of the control signal that is the second data of the control signal received from the first signal output module updated by the update controller. 
 
     
     
       2. The transmission apparatus according to  claim 1 , wherein:
 the second signal output module includes a data storage module for storing the second data of the control signal; 
 the first signal output module outputs the second data of the control signal for being stored in the data storage module; 
 the update controller controls an update of the second data of the control signal stored in the data storage module; 
 when the notice of the instruction for updating the function included in the first signal output module from the update controller is received,
 the update controller controls the data storage module to stop updating the second data of the control signal, and 
 the second signal output module outputs the first data of the control signal that is stored in the data storage module; and 
 
 when the notice of the completion for updating the function included in the first signal output module from the update controller is received,
 the update controller controls the data storage module to resume updating the second data of the control signal, and 
 the second signal output module outputs the first data of the control signal that is stored in the data storage module. 
 
 
     
     
       3. The transmission apparatus according to  claim 1 , wherein:
 the first signal output module outputs the second data of the control signal based on alarm included in the data signal; 
 the second signal output module, when the notice of the instruction for updating the function included in the first signal output module from the update controller is received, outputs the first data of the control signal based on the alarm included in the data signal that is data of the control signal based on the alarm included in the data signal generated in the second signal output module; and 
 the second signal output module, when the notice of the completion for updating the function included in the first signal output module from the update controller is received, outputs the first data of the control signal that is received from the first signal output module updated by the update controller. 
 
     
     
       4. The transmission apparatus according to  claim 3 , wherein:
 the second signal output module includes a data storage module for storing the second data of the control signal; 
 the first signal output module outputs the second data of the control signal for being stored in the data storage module; 
 the update controller controls an update of the second data of the control signal stored in the data storage module; 
 when the notice of the instruction for updating the function included in the first signal output module from the update controller is received,
 the update controller controls the data storage module to stop updating the second data of the control signal, and 
 the second signal output module outputs the first data of the control signal that is stored in the data storage module; and 
 
 when the notice of the completion for updating the function included in the first signal output module from the update controller is received,
 the update controller controls the data storage module to resume updating the second data of the control signal, and 
 the second signal output module outputs the first data of the control signal that is stored in the data storage module. 
 
 
     
     
       5. The transmission apparatus according to  claim 1 , wherein the first signal output module and the second signal output module are implemented on an FPGA (Field Programmable Gate Array) capable of performing partial configuration. 
     
     
       6. The transmission apparatus according to  claim 1 , further comprising:
 a fixed signal output module to output the data of the control signal processed by a function that the update is unnecessary.